User info: easy data input and editing

I like the ability for users to see their own usage and get email notifications.

I have about 100 tenants with Internet access. I allocate IP address pools per room and the BWM polices traffic based on that. So I reuse rules for new tenants which regularly change. Currently I have to go into every rule, and change the email address every time a tenant changes.
While this works ok, it is quite tedious going in and out of each rule. And there is no summary to see if it is up to date. Is it possible to either import email addresses, or have an easy entry page for email addresses across all rules? This would be great.

It would also be nice to optionally display the email address on the main rule page.